feat: add it.links.run placeholder (#4)

Author: ToppleTheNun

README.md

@@ -44,6 +44,7 @@ We use [squirrelly](https://squirrelly.js.org/) as the templating engine with `[
 - `it.repository`: The shorthand name for the repo (e.g., `singlestone/commit-deploy-slack-action`)
 - `it.links.commitSha`: Link to the commit that triggered this action.
 - `it.links.repository`: Link to the repository that triggered this action.
+- `it.links.run`: Link to the GitHub Actions run that triggered this action.
 
 ### Additional placeholders
 

src/template-message.ts

@@ -14,6 +14,13 @@ export const templateMessage = (params: TemplateMessageParams): string => {
       "/",
     ),
     repository: [params.linkRoot, repository].join("/"),
+    run: [
+      params.linkRoot,
+      repository,
+      "actions",
+      "runs",
+      params.github.runId,
+    ].join("/"),
   };
 
   return render(